# Async Events Over Synchronous Cross-Boundary

> Replace a synchronous call across an autonomy boundary with an asynchronous event, decoupling in time.

Record: `algorithms:no-sync-cross-boundary`
Kind: algorithm
Canonical: https://banes-lab.com/ontology/algorithms#algorithms-no-sync-cross-boundary
Closure: https://banes-lab.com/json/records/algorithms/no-sync-cross-boundary/closure

Listed in [Algorithm contracts](https://banes-lab.com/api/records/algorithms.md), after [Saga Compensation Over Distributed 2PC](https://banes-lab.com/records/algorithms/no-distributed-2pc.md) and before [Observable Signals Over Opaque Runtime](https://banes-lab.com/records/algorithms/no-opaque-runtime.md).

## Domain

- [Architectural Rules](https://banes-lab.com/records/algorithms-domain/architectural-rules.md)

## Tier

- [leaf](https://banes-lab.com/records/vocabulary/domain-tier-leaf.md)

## Composes

- [Execution Core](https://banes-lab.com/records/algorithms/execution-core.md)
- [Coupling Control](https://banes-lab.com/records/algorithms/coupling-control.md)

## Math type

- [Logic](https://banes-lab.com/records/reasoning/math-type-logic.md)

## Linked from

- [Architecture](https://banes-lab.com/ontology/algorithms/algorithms-domain-architecture.md)
- [Architectural Clusters](https://banes-lab.com/ontology/algorithms/algorithms-domain-architectural-clusters.md)
- [The mathematics](https://banes-lab.com/ontology/reasoning/the-mathematics.md)
- [Domain tiers](https://banes-lab.com/ontology/schema/the-vocabulary-domain-tier.md)